<template>
  <div class="comment-reply">
    <van-nav-bar
      :title="
        comment.reply_count > 0 ? `${comment.reply_count}条回复` : '暂无回复'
      "
    >
      <van-icon slot="left" name="cross" @click="$emit('close')" />
    </van-nav-bar>
    <!-- 当前评论项 -->
      <comment-item :comment="comment"/>
    <!-- /当前评论项 -->
    <!-- 评论回复列表 -->
    <van-cell title="全部回复" />
    <comment-list :source="comment.com_id" type="c" :list="commentList" :key='comment.com_id' />
    <div class="post-wrap">
        <van-button
          class="post-btn"
          size="small"
          round
          @click="isPostShow = true"
          >写评论</van-button
        >
      </div>
      <van-popup v-model="isPostShow" position="bottom">
        <comment-post :target="comment.com_id"  @post-success="onPostSuccess"/>
      </van-popup>
  </div>
</template>

<script>
import CommentItem from './comment_item.vue'
import CommentList from './comment-list.vue'
import CommentPost from './comment_post.vue'
export default {
  name: 'CommentReply',
  components: {
    CommentItem,
    CommentList,
    CommentPost
  },
  props: {
    comment: {
      type: Object,
      required: true
    }
  },
  data () {
    return {
      isPostShow: false,
      commentList: [] // 评论的回复列表
    }
  },

  methods: {
    onPostSuccess (data) {
      // 更新回复的数量
      this.comment.reply_count++

      // 关闭弹层
      this.isPostShow = false

      // 将最新回复的内容展示到列表的顶部
      this.commentList.unshift(data.new_obj)
    }
  }
}
</script>

<style lang="less" scoped>
.scroll-wrap {
  position: fixed;
  top: 92px;
  right: 0;
  bottom: 88px;
  left: 0;
  overflow-y: auto;
}
.post-wrap {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #fff;
  border-top: 1px solid #d8d8d8;
  .post-btn {
    width: 60%;
  }
}
</style>
